Install or upgrade @reopt-ai/opt-chat in a consumer project, including its AI SDK 7 form/conversation contract. Auto-branches by current install state. Triggers on "opt-chat install", "opt-chat init", "opt-chat setup", "chat install", "install chat", "set up AI chat", "opt-chat upgrade", "opt-chat update", "chat update", "PromptInput form", "Conversation migration".
